with fixed metal frames

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Patents Grantslast 30 patents

Information Patent Grant
Latching mechanism for access door
- Patent number 8,844,202
- Issue date Sep 30, 2014
- U.S.F. Fabrication, Inc.
- Osmany M. Carralero
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Rooftop access system
- Patent number 5,473,842
- Issue date Dec 12, 1995
- Hillery Realty Company, Inc.
- Herbert R. Hillery
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Window frame assembly
- Patent number 4,756,135
- Issue date Jul 12, 1988
- Citrullo; Joseph
- Joseph Citrullo
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
2850774
- Patent number 2,850,774
- Issue date Sep 9, 1958
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
2753964
- Patent number 2,753,964
- Issue date Jul 10, 1956
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
1455511
- Patent number 1,455,511
- Issue date May 15, 1923
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS